Opposite effects of midazolam and beta-carboline-3-carboxylate ethyl ester on the release of dopamine from rat nucleus accumbens measured by in vivo microdialysis.
Opposite effects of midazolam and beta-carboline-3-carboxylate ethyl ester on the release of dopamine from rat nucleus accumbens measured by in vivo microdialysis.
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通过体内微透析测量咪达唑仑和 β-咔啉-3-羧酸乙酯对大鼠伏核释放多巴胺的相反作用。
DOI:
10.1016/0014-2999(94)90301-8
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发表时间:
1994
影响因子:
5
通讯作者:
Masafami Kobayashi
中科院分区:
文献类型:
--
作者:
T. Murai;N. Koshikawa;Toshiyoshi Kanayama;Koji Takada;K. Tomiyama;Masafami Kobayashi
This report describes the effects of midazolam and β-carboline-3-carboxylate ethyl ester (β-CCE) on extracellular concentrations of dopamine in the nucleus accumbens of freely moving rats measured by in vivo mudialysis. The two compounds had opposite effects, midazolam (0.075 and 0.15 mg/kg i.v.) dose dependently decreasing, and β-CCE (3 and 10 mg/kg i.p.) dose dependently increasing, dialysate concentrations of dopamine. Flumazenil (6 μg/kg i.v.) did not affect the efflux of dopamine but it prevented the effects of both midazolam and β-CCE on dopamine efflux.N6-Cyclohexyladenosine (0.1, and 1 mg/kg i.p.), a seletive adenosine A1agonist, dose dependently increased the efflux of dopamine. This effect was blocked by 8-cyclopentyl-1,3-dipropylxanthine (25 mg/kg i.p.), a selective adenosine A1receptor antagonist, a dose which given alone did not affect dopamine efflux; responses to midazolam were not affected. 3,7-Dimethyl-1-propargylxanthine (1 and 3 mg/kg i.p.), a selective adenosine A2receptor antagonist, did not mimic the effects of β-CCE. The results suggest that midazolam and β-CCE modulate dopamine release in the nucleus accumbens by an action at the benzodiazepine binding site associated with the GABAAreceptor complex.
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影响因子:
3.6
作者:
Roca,DJ;Schiller,GD;Farb,DH
通讯作者:
Farb,DH
影响因子:
6.1
作者:
Takada,K;Winger,G;Cook,J;Larscheid,P;Woods,JH
通讯作者:
Woods,JH
DOI:
--
发表时间:
1990
期刊:
The Journal of pharmacology and experimental therapeutics
影响因子:
--
作者:
Tam,SY;Roth,RH
通讯作者:
Roth,RH
影响因子:
5.8
作者:
Tam,SY;Roth,RH
通讯作者:
Roth,RH